Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO

modulename: pch_gpio.ko

configname: CONFIG_GPIO_PCH

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>Intel EG20T PCH / OKI SEMICONDUCTOR ML7223 IOH GPIO
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
which is an IOH(Input/Output Hub) for x86 embedded processor.
This driver can access PCH GPIO device.

This driver also can be used for OKI SEMICONDUCTOR IOH(Input/
Output Hub), ML7223.
ML7223 IOH is for MP(Media Phone) use.
ML7223 is companion chip for Intel Atom E6xx series.
ML7223 is completely compatible for Intel EG20T PCH.

source code: